package com.kfh.ybracelet.utils;

import android.graphics.Rect;
import android.support.v7.widget.RecyclerView;
import android.view.View;

/**
 * recyclerview 的间距
 * Created by Aaron on 16/9/12.
 */
public class SpacesItemDecoration extends RecyclerView.ItemDecoration {

    private int space;
//    private Context mContext;
//    private Drawable mDivider;
//    private int mOrientation;
//    public static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL;
//    public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL;
//
//    //我们通过获取系统属性中的listDivider来添加，在系统中的AppTheme中设置
//    public static final int[] ATRRS = new int[]{
//            android.R.attr.listDivider
//    };

    public SpacesItemDecoration(int space) {
        this.space = space;
//        this.mContext = context;
//        final TypedArray ta = context.obtainStyledAttributes(ATRRS);
//        this.mDivider = ta.getDrawable(0);
//        ta.recycle();
//        setOrientation(orientation);
    }
//
//    public SpacesItemDecoration(int space, Context context, int orientation) {
//        this.space = space;
//        this.mContext = context;
//        final TypedArray ta = context.obtainStyledAttributes(ATRRS);
//        this.mDivider = ta.getDrawable(0);
//        ta.recycle();
//        setOrientation(orientation);
//    }
//
//
//    //设置屏幕的方向
//    public void setOrientation(int orientation) {
//        if (orientation != HORIZONTAL_LIST && orientation != VERTICAL_LIST) {
//            throw new IllegalArgumentException("invalid orientation");
//        }
//        mOrientation = orientation;
//    }
//
//    @Override
//    public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
//        if (mOrientation == HORIZONTAL_LIST) {
//            drawVerticalLine(c, parent, state);
//        } else {
//            drawHorizontalLine(c, parent, state);
//        }
//    }
//
//    //画横线, 这里的parent其实是显示在屏幕显示的这部分
//    public void drawHorizontalLine(Canvas c, RecyclerView parent, RecyclerView.State state) {
//        int left = parent.getPaddingLeft();
//        int right = parent.getWidth() - parent.getPaddingRight();
//        final int childCount = parent.getChildCount();
//        for (int i = 0; i < childCount; i++) {
//            final View child = parent.getChildAt(i);
//
//            //获得child的布局信息
//            final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
//            final int top = child.getBottom() + params.bottomMargin;
//            final int bottom = top + mDivider.getIntrinsicHeight();
//            mDivider.setBounds(left, top, right, bottom);
//            mDivider.draw(c);
//            //Log.d("wnw", left + " " + top + " "+right+"   "+bottom+" "+i);
//        }
//    }
//
//    //画竖线
//    public void drawVerticalLine(Canvas c, RecyclerView parent, RecyclerView.State state) {
//        int top = parent.getPaddingTop();
//        int bottom = parent.getHeight() - parent.getPaddingBottom();
//        final int childCount = parent.getChildCount();
//        for (int i = 0; i < childCount; i++) {
//            final View child = parent.getChildAt(i);
//
//            //获得child的布局信息
//            final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
//            final int left = child.getRight() + params.rightMargin;
//            final int right = left + mDivider.getIntrinsicWidth();
//            mDivider.setBounds(left, top, right, bottom);
//            mDivider.draw(c);
//        }
//    }
//
//    //由于Divider也有长宽高，每一个Item需要向下或者向右偏移
//    @Override
//    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
//        if (mOrientation == HORIZONTAL_LIST) {
//            //画横线，就是往下偏移一个分割线的高度
//            outRect.set(30, 0, 30, mDivider.getIntrinsicHeight());
//        } else {
//            //画竖线，就是往右偏移一个分割线的宽度
//            outRect.set(0, 0, mDivider.getIntrinsicWidth(), 0);
//        }
//
////        outRect.left = space;
////        outRect.right = space;
////        outRect.bottom = space;
////
////        // Add top margin only for the first item to avoid double space between items
////        if (parent.getChildPosition(view) == 0)
////            outRect.top = space;
//
//    }

    @Override
    public void getItemOffsets(Rect outRect, View view,
                               RecyclerView parent, RecyclerView.State state) {
        outRect.left = space;
        outRect.right = space;
        outRect.bottom = space;

        // Add top margin only for the first item to avoid double space between items
        if (parent.getChildPosition(view) == 0)
            outRect.top = space;
    }
}
